PR #34 Update outdate libraries

Fix #32 for ZF3: now config for PluginManager is case sensitive.

• Fixed bug uppercase image extensions #26
• Optional trailing slash in image display route. See #25

New Feature

• support for image output options like quality. See #22 and #23

Changes

• Updated Imagine to 0.6.x, fixed #10.
• Support for enabling/disabling caching for different filters. See #17 and #18 .
• Updated HtImgModule\Service\ImageService and HtImgModule\View\Helper\ImgUrl for avoiding injecting module options. See e3a97e6

A new way to load images. See #16

Fixed #15

Fixed #14
Enhance Image Renderer and Image Strategy. Image renderer now does not set content type header but that is handled by image strategy.

Rename term filter_alias to filter_service
Support for image loader options. See b049c2a

• Detected mime type in flysystem image loader
• Detected mime type in gaufrette image loader